/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

class TestClass {
    public testMethod(a: string): string;
    public testMethod(b: number): number;
    public testMethod(x: string | number): string | number {
        if (typeof x === 'number') {
            return x + 1;
        } else {
            return `${x}-1`;
        }
    }
}

let testInstance = new TestClass();
console.log(testInstance.testMethod(123));

function test(): void {
    let testInstance = new TestClass();
    console.log(testInstance.testMethod('abc'));
}